/* count.c -- using standard I/O */
#include <stdio.h>
#include <stdlib.h>	// exit() prototype

int main(int argc, char *argv[])
{
	int ch;			// place to store each character as read
	FILE *fp;		// "file pointer"
	unsigned long count = 0;
	if (argc != 2)
	{
		printf("usge: %s filename\n", argv[0]);
		exit(EXIT_FAILURE);
	}
	if ((fp = fopen(argv[1], "r")) == NULL)
	{
		printf("Can't open %s\n", __argv[1]);
		exit(EXIT_FAILURE);
	}
	while ((ch = getc(fp)) != EOF)
	{
		putc(ch, stdout);	// same as putchar(ch);
		count++;
	}
	fclose(fp);
	printf("File %s has %lu characters\n", argv[1], count);

	return 0;
}